Safety appliance for elevators.



J. T. ALBERT. SAFETY APPLIANCE FUR ELEVATORS. APPLIOATION TILED SEPT. 2,1908.

7 936,285. Patented 001;. 12, 1909.

ANDREW. B. aamm 00., mom-Lrmccmmins. wlsummon. ay 4:.

UNI

snares earner orator;

JOSEPH TAYLOR ALBERT, OF BALTIMORE, MARYLAND, ASSIGNOR, BY MESNE ASSIGN-MENTS, TO THE UNIVERSAL SAFETY ELEVATOR LOCKING DEVICE 00., A CORPORA-TION 0F MARYLAND.

SAFETY APFLIANCE FOR ELEVATORS.

To all whom it may concern:

Be it known that I, Josnri-i TAYLOR AL- BERT, of the city of Baltimoreand State of Maryland, have invented certain Improve ments in SafetyAppliances for Elevators, of which the following is a specification.

In the description of the said invention which follows, reference ismade to the accompanying drawing forming a part hereof, and in which,

Figure 1 is a horizontal section of certain parts of the elevator cage,together with the sliding door on one of the floors of the building,illustrating the relative positions of the said parts when the slidingdoor is closed and locked. tain parts of the apparatus, shown in Fig. 1,some of which are represented in section, and illustrating the relativepositions of the various parts when the motive power is cut off, and thesliding door open.

Referring now to the drawing, 1 is a bar pivoted at a to the handle Z)of the controller 0 situated within the cage, whereby the cage is put inmotion, or stopped.

The outer end of the bar 1 is pivoted to a tumbler 2 which is centrallyfuicrmned at 3 within a box (Z let into the wall 7 of the cage. The freeend of the tumbler 2 is provided with a vertically tapered head athaving a laterally rounded outer surface.

In the movement of the controller handle 7) in the direction indicatedby the full arrow in F 1, to the vertical position shown in Fig. 2,power to move the cage is cut off, and the tumbler 2 brought to a rightangle with respect to the wall 7 of the cage and its head t directly infront of a central depression f in the block 8, adapted to receive thesaid head. The block 8 is secured to a plate 11 hinged at 1th to thefloor 9 of the building, and adapted to be swung toward and from thewall 7 of the cage. In Fig. 1 the plate 11 is shown in its extremebackward, and in Fig. 2 in its extreme forward position.

The edge of the plate 11, to the right of 111g. 1, has an angular orinclined extension 71. which passes through a slot in the plate 12fastened to the edge of the sliding door 6 a portion only of which dooris shown. The door 6 has to be slid in the direction indicated by thedotted arrow to give entrance to the cage.

16 is a locking lever pivoted at 15 to the Specification of LettersPatent.

Application filed September 2, 1908.

h 1g. 2 is a vertical side of oer-- Patented Get. 12, 1909. Serial No.451,435.

plate 11. The inner arm of the said lever rests in a slot 17 (shown infull lines in Fig. 2) in the block 8, and is provided at its end with afinger 10 which is shown in both fig arcs of the drawing. The outer armof the locking lever 16 passes through a slot 20 (shown in dotted linesin Fig. 1) in the angular extension /zof the vertical hinged plate 11,where it is provided with a stop 13 which, when the sliding door 6 isclosed as shown in Fig. 1, is opposed to the edge of the said door, andlocks the same and provents its being opened. The locking lever 16 isyieldingly held in position, by means of a spring 5).

Supposing the various parts of the apparatus to be in the relativepositions shown in Fig. 1, it will be seen that the cage can be elevatedor lowered, but the sliding door being locked by the stop 13 of thelocking lever 16, cannot be opened; but should the motive power he cutoil by changing the handle Z) of the controller 0 from the horizontalposition shown in Fig. l to the vertical position illustrated in Fig. 2,the tumbler 2 will be turned and brought to a. right angle with respectto the wall 7 of the cage, and its head 4 brought opposite to or invertical alinement with the depression j in the block 8 on the hingedvertical plate 11. As the cage 7 in moving upward or downward reachesany floor of the building having asliding door provided with theelements of the safety appliances described, and the motive power shutoil, the tapered head 4 of the tumbler 2 will engage the finger 10 ofthe locking lever 16, but not communicate such movement to the lever asto affect or interfere with its locking function. In opening the slidingdoor 6 to give entrance to the cage, the slotted plate 12 firsttraverses the angular extension 20 of the vertical hinged plate 11, andby the time that it has reached the straight or main portion of thatdevice, the plate 11 will have been thrown forward carrying with it theblock 8, and the locking lever 16. The finger 10 of the locking leverbeing in contact with the head a of the tumbler 2, the said lever doesnot receive a motion in common with the vertical hinged plate 11 and itsblock 8 but is tilted and its stop 13 removed from the path of thesliding door 6, and therefore that device does not offer any obstacle tothe full and complete opening of the door, or the closing of the same.

it will be understood that in the opening of the sliding door asdescribed, the head 41: of the tumbler 2 enters the depression f of theblock 8, consequently the handle Z) of the controller 0 cannot berestored to its original position and the cage set in motion, until thedoor has been closed in which operation the hinged plate 11 is restoredto its original position or that shown in Fig. 1 and the stop 13 of thelocking lever 16 is again brought into locking position.

I claim as my invention,

1. An elevator cage, a motion controller situated within the cage havingan operating handle, a tumbler iulcrumed in the wall of the cage andadapted to extend outwardly therefrom, a device to actuate the tumblerfrom the handle of the controller, a vertical hinged plate situatedexteriorly of the cage, having a fixed position, a sliding door on afloor of the building, and locking mechanism for the tumbler, and a stopfor the sliding door both of which are carried by the hinged plate,combined with an appliance attached to the sliding door which in theopening of the door, throws the sliding plate and the locking and stopmechanism toward the cage, whereby the former cooperates with thetumbler to lock the controller and the latter is moved from the path ofthe sliding door, substantially as specified.

2. An elevator cage, a motion controller situated within the cage havingan operating handle, a tumbler fulcrumed in the wall of the cage, adevice to actuate the tumbler from the operating handle of thecontroller, and a sliding door placed exteriorly of the cage, combinedwith a vertical hinged plate having a fixed position, an appliancesecured to the sliding door whereby 1n the opening and closing of thesame, the vert1 cal plate is made to move toward and from the cage, andstop mechanism carried by the said plate adapted to cooperate with thetumbler as the motive power is cut off, and thereby render the stopmechanism inoperative in the initial movement of the door in the openingoperation, substantially as specified.

3. An elevator cage, a motion controller situated within the cage havingan operating handle, a tumbler pivoted in the wall of the cage with itsouter end projecting outwardly therefrom, and a bar which connects theoperating handle with the inner end of the tumbler, the arrangement ofthe said parts being such that upon the stoppage of the cage, theoutward projection of the tumbler is increased, combined with a hingedvertical plate having a fixed position and susceptible of a swingingmovement toward and from the wall of the cage, a block secured to thehinged plate having a depression therein adapted to receive theprojecting end of the tumbler and thereby prevent its movement, and thatof the controller handle, means to eitect the swinging move-, ment ofthe vertical plate carrying the recessed block primarily derived fromthe sliding door, and a locking lever having a stop for the door, whichreceives its unlocking motion through the medlum of the tumbler in theswinging movement of the vertical lunged plate, substantlally asspecified.

JOSEPH TAYLOR ALBERT.

\Vitnesses CHAS. C. EYLER, JOHN H. I-lENKUs.

